Not sure if anyone would be interested in this, but I'll post it anyways. Hotkeynet is needed and afaik controller can't be used. Buddy of mine saw a stream and wanted to be able to play XI like that so here we are. This particular script is for tribox, but can be edited for as many as needed.

Features:
Hotkey for Window Switching instead of alt tab. (Tilde key)
Picture in Picture (Shows Mules Windows)
Toggle for PiP (On/Off) I haven't figured out how to make it permanent yet. (Alt Tilde)
Click to Switch Windows (Alt LMB)
I added a hotkey for autohide for taskbar since XI doesn't seem to like it and doesn't want to lose focus. (END) which also makes focus follow windows.

It still needs work and features, but I figured someone might be interested in it probably not though.